[Wien] berryphase

Oleg Rubel orubel at lakeheadu.ca
Mon Dec 9 16:56:16 CET 2013

Dear Shahrbano,

> Do you think that the intermediate is necessary? By transition I meant
> transition between lambda0 as the centrosymmetric phase and lambda1 as the
> noncentrosymmetic phase.

You do not have to calculate intermediate structures, but Eq. (2) in
Phys. Rev. B, 1993, 47, 1651-1654 implies that they exist.

Thank you

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